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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
21

Model checking compositional Markov systems /

Johr, Sven. January 2008 (has links)
Univ., Diss.--Saarbrücken, 2007.
22

Vergleich von Algorithmen für den Leerheitstest von Büchiautomaten

Gaiser, Andreas. January 2007 (has links)
Stuttgart, Univ., Studienarbeit, 2007.
23

Analysis of the scale-contaminated normal model diagnostics and robustness /

Little, James Kevin. January 1983 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1983. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 242-245).
24

Halbordnungs- und Reduktionstechniken für die automatische Verifikation von verteilten Systemen

Schröter, Claus. January 2006 (has links)
Stuttgart, Univ., Diss., 2006.
25

Model checking combined Z and statechart specifications

Büssow, Robert. January 2003 (has links) (PDF)
Berlin, Techn. Univ., Diss., 2003. / Computerdatei im Fernzugriff.
26

On logics that express "there exist many indiscernibles"

Steinhorn, Charles Ira. January 1980 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1980. / Typescript. Vita. Description based on print version record. Includes bibliographical references (leaves 127-129).
27

Model-checking problems, machines and parameterized complexity

Chen, Yijia. January 2004 (has links) (PDF)
Freiburg (Breisgau), University, Diss., 2004.
28

Abstractions booléennes pour la vérification des systèmes temps-réel / Tools supported real-time system verification with combination of abstraction/deduction and Model checking

Kang, Eun-Young 08 November 2007 (has links)
Cette thèse présente un schéma formel et efficace pour la vérification de systèmes temps-réel. Ce schéma repose sur la combinaison par abstraction de techniques déductives et de model checking, et cette combinaison permet de contourner les limites de chacune de ces techniques. La méthode utilise le raffinement itératif abstrait (IAR) pour le calcul d'abstractions finies. Etant donné un système de transitions et un ensemble fini de prédicats, la méthode détermine une abstraction booléenne dont les états correspondent à des ensembles de prédicats. La correction de l'abstraction par rapport au système d'origine est garantie en établissant un ensemble de conditions de vérification, issues de la procédure IAR. Ces conditions sont à démontrer à l'aide d'un prouveur de théorèmes. Les propriétés de sûreté et de vivacité sont ensuite vérifiées par rapport au modèle abstrait. La procédure IAR termine lorsque toutes les conditions sont vérifiées. Dans le cas contraire, une analyse plus fine détermine si le modèle abstrait doit être affiné en considérant davantage de prédicats. Nous identifions une classe de diagrammes de prédicats appelés PDT (predicate diagram for timed system) qui décrivent l'abstraction et qui peuvent être utilisés pour la vérification de systèmes temporisés et paramétrés. / This thesis provides an efficient formal scheme for the tool-supported real-time system verification by combination of abstraction-based deductive and model checking techniques in order to handle the limitations of the applied verification techniques. This method is based on IAR (Iterative Abstract Refinement) to compute finite state abstractions. Given a transition system and a finite set of predicates, this method determines a finite abstraction, where each state of the abstract state space is a true assignment to the abstraction predicates. A theorem prover can be used to verify that the finite abstract model is a correct abstraction of a given system by checking conformance between an abstract and a concrete model by establishing/proving that a set of verification conditions are obtained during the IAR procedure. Then the safety/liveness properties are checked over the abstract model. If the verification condition holds successfully, IAR terminates its procedure. Otherwise more analysis is applied to identify if the abstract model needs to be more precise by adding extra predicates. As abstraction form, we adopt a class of predicate diagrams and define a variant of predicate diagram PDT (Predicate Diagram for Timed systems) that can be used to verify real-time and parameterized systems.
29

Abstract model theory

Fraser, Craig Graham January 1976 (has links)
We define a notion of logic that provides a general framework for the study of extensions of first-order predicate calculus. The concept of partial isomorphism and its relation to infinitary logics are examined. Results on the definability of ordinals establish the setting for our proof of Lindstrom's Theorem: this theorem gives conditions that characterize first-order logic. We then consider the analogues to the general case of the compactness and Lowenheim properties. For a wide class of logics it is shown that interesting connections exist between the analogues of these properties. / Science, Faculty of / Mathematics, Department of / Graduate
30

Hierarchical Anderson model

Kritchevski, Evgenij. January 2008 (has links)
No description available.

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